Massage stick



FIG. 1 is a front elevational view of a massage stick showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view shown at an enlarged scale thereof;

FIG. 6 is a bottom plan view shown at an enlarged scale thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the massage stick, which form no part of the claimed design. 

CLAIM The ornamental design for a massage stick, as shown and described. 